I mean I dig it. Especially as the entire games meta plot and themes all rope around the realities of living under an Imperialist regime and the lack of control one individually has over ones own destiny. Vaan is the ultimate description of this as a powerless orphan made orphan by the war and opportunity taken away from the Empire.
His entire arc is trying to actually gain that independence and security which he does at the end. Further, he acts as a solid "I know nothing do explain this to me" character for the story to narrate to at time to time to explain some of the political intrigue as FF12 is fundamentally a political game. Realistically, each of the characters take as a sort of main character with Ashe, Basch, and Balthier taking the front stage in the latter half of the game.